CN110618418A - Automatic calibration method for sensor test system - Google Patents
Automatic calibration method for sensor test system Download PDFInfo
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- CN110618418A CN110618418A CN201910943063.3A CN201910943063A CN110618418A CN 110618418 A CN110618418 A CN 110618418A CN 201910943063 A CN201910943063 A CN 201910943063A CN 110618418 A CN110618418 A CN 110618418A
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- 238000012360 testing method Methods 0.000 title claims abstract description 89
- 238000000034 method Methods 0.000 title claims abstract description 30
- 238000001514 detection method Methods 0.000 claims abstract description 39
- 238000004088 simulation Methods 0.000 claims description 10
- 238000012937 correction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000013102 re-test Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S15/00—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
- G01S15/02—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems using reflection of acoustic waves
- G01S15/06—Systems determining the position data of a target
- G01S15/08—Systems for measuring distance only
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/52—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S15/00
- G01S7/52004—Means for monitoring or calibrating
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Computer Networks & Wireless Communication (AREA)
- General Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
- Measurement Of Optical Distance (AREA)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
Abstract
The invention belongs to the field of ultrasonic ranging, and particularly relates to an automatic calibration method for a sensor test system, which comprises the steps of installing a detection device on a test panel and adjusting the height of the detection device; after the sensor testing system is initialized, inputting a configuration file of a sensor to be tested into an upper computer database; the sensor testing system is connected to an upper computer, and the upper computer selects a corresponding parameter configuration file and completes parameter setting by identifying the ID model of the sensor; the upper computer drives the track motor to drive the simulated detected device to slide on the calibration track according to the set parameters, and is used for adjusting the distance between the simulated detected device and the detection device; prompting a worker to finish the test calibration work after the test of the sensor test system is finished; the sensor is automatically corrected and calibrated through automatic adjustment of the upper computer, and no professional is required to debug; the standard setting adopts the upper computer to set automatically without manual adjustment, thereby improving the testing efficiency.
Description
Technical Field
The invention belongs to the field of ultrasonic ranging, and particularly relates to an automatic calibration method for a sensor test system.
Background
With the development of sensor technology, during the production of sensors, it is necessary to test, calibrate and then retest the finished assembled sensors, so-called sensor calibration. Calibration is taken as a key step of the final delivery stage of the sensor, and is directly related to the quality and stability of the sensor.
The current test calibration system of the sensor needs to go through key steps of standard setting, function testing, sensor data feedback, debugging and calibration and the like under the normal condition; most of detection, control and standard setting of the existing calibration system need to be manually adjusted, and the time spent on completing one test to enter the next test is long; still need the manual work to debug the calibration when data feedback does not pass for the efficiency of test calibration is not high, increases the cost of labor and extravagant manpower. The existing calibration method has higher requirement on the professional of testers, is difficult to be qualified by people who cannot know the characteristics of the sensor, cannot automatically correct and calibrate the sensor with abnormal data feedback, is usually only suitable for a single type of sensor, and has higher test cost.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention discloses an automatic calibration method for a sensor testing system.
The invention adopts the following technical scheme: there is provided an automatic calibration method for a sensor testing system, the sensor testing system comprising: the device comprises a detection device, a test panel, a sliding device and a simulation detected device, wherein the sliding device is connected with the detection device and the simulation detected device, the detection device is installed on the test panel, the test panel is fixed on the sliding device through a fixing rod, the simulation detected device which is arranged corresponding to the test panel is installed on the sliding device through a connecting rod and moves on the sliding device, the sliding device comprises a calibration track and a track motor, and the track motor is connected with an upper computer; the method comprises the following steps:
s1: mounting the detection device on a test panel, and adjusting the height of the detection device to accurately detect the simulated detected device;
s2: after the sensor testing system is initialized, inputting a configuration file of a sensor to be tested into an upper computer database;
s3: the sensor testing system is connected to an upper computer, and the upper computer selects a corresponding parameter configuration file and completes parameter setting by identifying the ID model of the sensor;
s4: after receiving the detection information of the detection device, the upper computer drives the track motor to drive the simulated detected device to slide on the calibration track according to the set parameters, and the upper computer is used for adjusting the distance between the simulated detected device and the detection device;
s5: and prompting a worker to finish the test calibration work after the test of the sensor test system is finished.
Furthermore, the simulated detected device is specifically a calibration plate printed with an image to be identified by the detection device, and the height of the calibration plate corresponds to the height of the detection device.
Furthermore, the device also comprises a movable mounting seat, and two ends of the movable mounting seat are respectively connected to the calibration plate and the calibration track for realizing the adjustment of the height of the calibration plate.
Further, the detection device is an ultrasonic sensor or a camera mounted on the test panel.
Further, the ultrasonic sensors are specifically six ultrasonic ranging sensors which are longitudinally arranged and installed on the test panel.
Furthermore, a USART interface is reserved in the sensor testing system, and the measured distance signal is sent to an upper computer or other external equipment through the USART with the COMS level.
The automatic calibration method automatically realizes the work of standard setting, function testing, data feedback processing and automatic correction and calibration by matching the upper computer with the automatic test slide rail without manual intervention, and the whole process automatically runs, thereby improving the test efficiency; the method has strong adaptability, can be suitable for testing of various sensors, automatically corrects and calibrates the sensors through automatic adjustment of the upper computer, and does not need to be debugged by professionals; the calibration method can be realized only by correspondingly replacing the sensor mounting panel and the calibration plate, has strong universality and effectively reduces the test cost, and the standard settings of the new calibration method, such as distance and height, are automatically set by an upper computer without manual adjustment; the test continuity is stronger, and the test efficiency is improved.
Drawings
FIG. 1 is a block diagram of a circuit configuration for an automatic calibration method for a sensor testing system;
FIG. 2 is a schematic structural diagram of an automatic calibration method for a sensor testing system;
FIG. 3 is a flow chart of an automatic calibration method for a sensor testing system.
Detailed Description
The present invention is further illustrated by the following description and examples, including but not limited to the following examples, taken in conjunction with the accompanying drawings.
The present embodiment provides an automatic calibration method for a sensor testing system, as shown in fig. 1, the sensor testing system includes: the device comprises a detection device, a test panel, a sliding device and a simulation detected device, wherein the sliding device is connected with the detection device and the simulation detected device, the detection device is installed on the test panel, the test panel is fixed on the sliding device through a fixing rod, the simulation detected device which is arranged corresponding to the test panel is installed on the sliding device through a connecting rod and moves on the sliding device, the sliding device comprises a calibration track and a track motor, and the track motor is connected with an upper computer; the detection device is an ultrasonic sensor or a camera arranged on the test panel; the ultrasonic sensors are six ultrasonic ranging sensors which are longitudinally arranged and installed on the test panel; the simulation detected device is specifically a calibration plate printed with an image to be identified by the detection device, and the height of the calibration plate corresponds to that of the detection device; a USART interface is reserved in the sensor testing system, and the measured distance signal is sent to an upper computer or other external equipment through the USART of the COMS level;
the automatic calibration method comprises the following steps:
s1: mounting the detection device on a test panel, and adjusting the height of the detection device to accurately detect the simulated detected device;
s2: after the sensor testing system is initialized, inputting a configuration file of a sensor to be tested into an upper computer database;
s3: the sensor testing system is connected to an upper computer, and the upper computer selects a corresponding parameter configuration file and completes parameter setting by identifying the ID model of the sensor; the sensor testing system can detect various ranging sensors, and distinguishes the sensors through hardware IDs aiming at different sensors;
s4: after receiving the detection information of the detection device, the upper computer drives the track motor to drive the simulated detected device to slide on the calibration track according to the set parameters, and the upper computer is used for adjusting the distance between the simulated detected device and the detection device;
s5: and prompting a worker to finish the test calibration work after the test of the sensor test system is finished.
The device comprises a calibration plate, a calibration track and a movable mounting seat, wherein the calibration plate is arranged on the movable mounting seat, and the two ends of the calibration plate are respectively connected to the calibration plate and the calibration track for realizing the height adjustment of the calibration plate.
As shown in fig. 3, the process of performing ranging calibration by the automatic calibration method of the present embodiment is as follows:
1) firstly, the ultrasonic sensors are installed on a test panel, wherein 6 ultrasonic sensors are longitudinally arranged and installed to cover and detect the whole calibration plate as much as possible, and the installation mode is adjusted according to different properties of the sensors and is not limited to the above.
2) And secondly, a calibration plate is arranged and used as a target detection object of the ultrasonic sensor, the performance of the ultrasonic sensor can be verified, the calibration plate is usually a hard sheet with a fixed size and can also be an object made of paper or other materials, the selection is required according to the characteristics of the sensor, and the calibration plate can also be a camera.
3) The ultrasonic sensor and the calibration plate are installed, and the height of the ultrasonic sensor and the height of the calibration plate are adjusted to ensure that the ultrasonic sensor can accurately detect the calibration plate.
4) The method comprises the following steps of initializing by an upper computer adjusting system, and inputting a configuration file of a sensor to be tested in a database through the upper computer, wherein the configuration file comprises the following parameters: the sensor model, the start and end positions of the sliding rail movement, the sliding rail movement speed, the detection qualified standard and the calibration method; after the upper computer is connected with a sensor testing system, firstly, the ID model of a sensor is identified, and then, a corresponding parameter configuration file is selected autonomously according to the currently accessed sensor model, and parameter setting is completed; the upper computer is respectively connected with an ultrasonic sensor and a track motor and controls the track motor to drive the calibration track, and the upper computer sets parameters including the movement speed of the slide rail, the movement start and end positions of the slide rail, a detection qualified standard, a calibration mode and the like;
5) the upper computer receives the detection information of the ultrasonic sensor, parameters are set through the upper computer, the calibration track drives the track motor to drive the calibration plate to slide on the calibration track through the upper computer, the distance between the calibration plate and the ultrasonic sensor is adjusted to finish calibration of the calibration plate, and after the test is finished, a worker is prompted to finish the test calibration work.
According to the embodiment, the automatic calibration system can be matched with the automatic test slide rail to automatically realize the work of standard setting, function test, data feedback processing and automatic correction and calibration without manual intervention, the whole process automatically runs, and the test efficiency is improved.
Claims (6)
1. An automatic calibration method for a sensor testing system, the sensor testing system comprising: the device comprises a detection device, a test panel, a sliding device and a simulation detected device, wherein the sliding device is connected with the detection device and the simulation detected device, the detection device is installed on the test panel, the test panel is fixed on the sliding device through a fixing rod, the simulation detected device which is arranged corresponding to the test panel is installed on the sliding device through a connecting rod and moves on the sliding device, the sliding device comprises a calibration track and a track motor, and the track motor is connected with an upper computer; the method is characterized by comprising the following steps:
s1: mounting the detection device on a test panel, and adjusting the height of the detection device to accurately detect the simulated detected device;
s2: after the sensor testing system is initialized, inputting a configuration file of a sensor to be tested into an upper computer database;
s3: the sensor testing system is connected to an upper computer, and the upper computer selects a corresponding parameter configuration file and completes parameter setting by identifying the ID model of the sensor;
s4: after receiving the detection information of the detection device, the upper computer drives the track motor to drive the simulated detected device to slide on the calibration track according to the set parameters, and the upper computer is used for adjusting the distance between the simulated detected device and the detection device;
s5: and prompting a worker to finish the test calibration work after the test of the sensor test system is finished.
2. The automatic calibration method for the sensor test system according to claim 1, wherein the simulated device to be tested is embodied as a calibration plate printed with an image to be recognized of the testing device, and the height of the calibration plate corresponds to the height of the testing device.
3. The automatic calibration method for a sensor test system according to claim 2, further comprising a movable mount having two ends respectively connected to the calibration plate and the calibration rail for enabling adjustment of the height of the calibration plate.
4. The automatic calibration method for the sensor test system according to claims 1-3, wherein the detection device is an ultrasonic sensor or a camera mounted on the test panel.
5. The automatic calibration method for the sensor test system according to claim 4, wherein the ultrasonic sensors are six ultrasonic ranging sensors longitudinally arranged on the test panel.
6. The automatic calibration method for the sensor test system according to claim 1, wherein a USART interface is reserved in the sensor test system, and the measured distance signal is sent to an upper computer or other external devices through the USART with the cmos level.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910943063.3A CN110618418A (en) | 2019-09-30 | 2019-09-30 | Automatic calibration method for sensor test system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910943063.3A CN110618418A (en) | 2019-09-30 | 2019-09-30 | Automatic calibration method for sensor test system |
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| CN110618418A true CN110618418A (en) | 2019-12-27 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111457943A (en) * | 2020-05-13 | 2020-07-28 | 深圳市中联讯科技有限公司 | Automatic calibration equipment and calibration method for sensor |
| CN113670515A (en) * | 2021-07-20 | 2021-11-19 | 中车青岛四方机车车辆股份有限公司 | Load sensor calibration device and calibration method |
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Patent Citations (6)
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| CN111457943A (en) * | 2020-05-13 | 2020-07-28 | 深圳市中联讯科技有限公司 | Automatic calibration equipment and calibration method for sensor |
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Application publication date: 20191227 |
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